000
FXUS63 KMKX 181915
AFDMKX
Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
215 PM CDT Sun Mar 18 2018
.DISCUSSION...
Monday through Thursday - Confidence...Medium to High
Looks like a cool and dry period. Low pressure will be passing
well to our south and southeast tonight into Tuesday which will
reinforce the cooler regime and tighten up the pressure gradient.
Surface ridging takes hold for Wednesday and Thursday with more
quiet and cool conditions.
Friday and Saturday - Confidence...Low to Medium
Models continue to be in decent agreement on bringing the next
weather maker of concern into the area this period. The ECMWF is
considerably slower than the GFS. At this point a mix or a brief
period of rain would be possible at the outset with the
predominant precip type looking more like snow. Potential is still
there for several inches of snow so have maintained a highlight
of this in the HWO.
Saturday night and Sunday - Confidence...Medium
Should have a break between systems, with the ECMWF implying this
would last throughout the day on Sunday. Meanwhile the GFS brings
another system in which could arrive as soon as Sunday afternoon
with potential there for snow or a mix with this one as well.
&&
.AVIATION(18Z TAFS)...VFR mostly skc this period. Northeast winds
will increase tonight into Monday as pressure gradient tightens up
between Canadian high pressure and low pressure moving well to
our south.
&&
.MARINE...Small Craft Advisory starts later tonight and goes
through Tuesday night. This is due to the ramping up of an onshore
component that is likely to generate high wave action. Low
pressure passing to our south will help to tighten up the pressure
gradient and the subsequent uptick in the northeast winds.
&&
.MKX WATCHES/WARNINGS/ADVISORIES...
WI...None.
LM...Small Craft Advisory from 4 AM Monday to 7 AM CDT Wednesday for
LMZ643>646.
&&
$$
Tonight/Monday and Aviation/Marine...Collar
Monday Night through Sunday...Collar